Results 31 to 40 of about 11,755,516 (235)

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

A Study on a Dynamic Model and Calculation Method of Wellbore Temperature in Ultra-Deep Wells

Energies
With growing global energy demand, deep and ultra-deep wells have become a focal point in oil and gas development. Wellbore temperature variations significantly impact drilling and completion operations in such wells.
Jianguo Zhao, Han Zhang, Yang Wang, Xinfeng Liu, Pingan Wang   +4 more
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Experimental Study of the Space–Time Effect of a Double-Pipe Frozen Curtain Formation with Different Groundwater Velocities

Energies, 2021
Groundwater velocity has significant effects on the formation of a frozen curtain during freezing. In order to study the influence of the velocity on a frozen curtain, a large physical model test platform was established for double-pipe freezing.
Shicheng Sun, Chuanxin Rong, Hua Cheng, Bin Wang, Xiaogang Jiang, Wei Zhang, Yunusa Halliru   +6 more
doaj   +1 more source

Smaller is better: nanobodies meet NMR

FEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

CFD-modeling of the temperature field of the radiator casing of the transmitting module of the active phased antenna arrays with air cooling

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2019
Frequency multipliers are used in electronic devices to generate spectrally pure sinusoidal signals in the frequency range from a few to tens of GHz. The multipliers are used to multiply the frequency of highly stable but more low-frequency devices with ...
Yu. Nikolaenko, O. Baranyuk, S. Reva, V. Rohachov   +3 more
doaj   +1 more source

Heat-Flow Coupling Law for Freezing a Pipe Reinforcement with Varying Curvatures

Applied Sciences, 2023
Using the temperature and seepage field-coupling module within COMSOL Multiphysics software, we examined freezing behavior and its evolving patterns in curved underground freezing pipes.
Kun Yang, Jun Hu, Tao Wang
doaj   +1 more source

Temperature- and magnetic-field-induced magnetization reversal in perovskite YFe0.5Cr0.5O3

, 2011
Perovskite YFe0.5Cr0.5O3 exhibits magnetization reversal at low applied fields due to the competition between the single ion magnetic anisotropy and the antisymmetric Dzyaloshinsky-Moriya interaction.
Yantao Su, Xingquan Zhang, Ruibin Zhu (10061542), Yi Wang (32470), Jinhua Mao (8210534), Zhang, Xingquan, Mao, Jinhua, Xianjie Wang (1511281), Wanfa Liu (2043634), Yu Sui, Tang, Jinke, Wanfa Liu, Jinhua Mao, Xingquan Zhang (7455044), Su, Yantao, Zhiguo Liu (594653), Yantao Su (1403806), Wang, Yi, Wang, Yang, Yi Wang, Zhu, Ruibin, Xianjie Wang, Zhiguo Liu, Jinke Tang, Yang Wang (5921), Liu, Zhiguo, Jinke Tang (2056753), Yu Sui (442330), Yang Wang, Wang, Xianjie, Ruibin Zhu, Liu, Wanfa, Sui, Yu   +32 more
core   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source

Temperature and thermal stress distribution in concrete arch dams in operation [PDF]

, 2011
The temperature field of concrete dams in operational stages is dominantly influenced by variations in environmental seasonal temperature and climatic conditions.
Meri, Tony Carlos
core   +1 more source